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Nano-porous anodic aluminum oxide membrane for healthcare and biotechnology

a technology of anodic aluminum oxide and nanoporous aluminum oxide, which is applied in the direction of membranes, coatings, membrane technology, etc., can solve the problems of unsuitable unsuitable products, and difficult synthesis of high-purity nanoporous materials suitable for health and biotechnology applications, so as to achieve high purity, reduce costs, and improve the effect of synthesis

Active Publication Date: 2020-12-17
NANOPEC INC
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Benefits of technology

This patent describes how we can make very pure and safe ceramic films and membranes without any harmful chemicals. We use an easy process to get rid of these costly substances which makes everything safer and cheaper. It's perfect for making products used in medicine and technology because it has tiny holes and works really well.

Problems solved by technology

This patent discusses the challenges associated with traditional processes for making nano-porous aluminum oxide films and how they may contain potentially harmful substances like heavy metals. Therefore, the technical problem addressed is finding an alternative approach for manufacturing these films which doesn't rely on cytotoxic chemistry.

Method used

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  • Nano-porous anodic aluminum oxide membrane for healthcare and biotechnology
  • Nano-porous anodic aluminum oxide membrane for healthcare and biotechnology
  • Nano-porous anodic aluminum oxide membrane for healthcare and biotechnology

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Embodiment Construction

[0020]Referring to the figures, wherein like numeral refer to like parts throughout, there is seen in FIG. 1 an approach for manufacturing high purity nano-structured aluminum oxide films without the use of cytotoxic chemicals. In the present application, film is used to refer to a structure having closed pores, i.e., a pore that does not extend entirely through the film, while membrane is used to refer to a film having open pores, i.e., a pore that extends through the film. As a result, the term film encompasses the term membrane. The term cytotoxic is used in the conventional manner to refer to chemicals that are toxic to biological cells, such as chemicals that induce apoptosis, lysis, necrosis or that significantly affect cell viability and proliferation. With respect to the present application, conventional cytotoxic chemicals used in manufacturing high purity nano-structured aluminum oxide films include chemicals such as chromium and most specifically, hexavalent chromium, as ...

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Abstract

A method of manufacturing a nano-structured aluminum oxide film. The first step involves degreasing an aluminum plate using a degreasing solution. The next step involves electropolishing the aluminum plate after degreasing with an electropolishing solution that is free of perchloric acid and chromic acid. The next step involves pre-anodizing the aluminum plate after electropolishing with an anodization acid solution for a first predetermined time period. The next step involves anodizing the aluminum plate after electropolishing with the anodization acid solution for a second predetermined time period to form an anodized membrane on the aluminum plate. The next step involves separating the anodized membrane from the aluminum plate with a solution free of chrome. The last step involves cleaning the anodized membrane.

Description

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Claims

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Application Information

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Owner NANOPEC INC
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